<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h2>表单提交</h2>
    <form action="#" method="get">
        <input type="text" placeholder="用户名"><br/>
        <input type="password" placeholder="密码"><br/>
        <button>提交</button>
    </form>
</body>
</html>